Münster 2011 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 7: Instrumentierung I
HK 7.2: Vortrag
Montag, 21. März 2011, 14:15–14:30, HS1
Energy loss measurement and particle identification with the use of PANDA-type Straw Tube Tracker — •Krzysztof Pysz1,2, Susanna Costanza3, Wilhelm Erven1, Pawel Kulessa1,2, Robert Nellen1, Henner Ohm1, Dieter Prashun1, James Ritman1, Valeriy Serdyuk1,4, Peter Wintz1, and Peter Wuestner1 — 1IKP Forschungszentrum Juelich, Germany — 2Institute for Nuclear Physics PAN Krakow, Poland — 3INFN Pavia, Italy — 4JINR Dubna, Russia
The proposed Straw Tube Tracker (STT) for the PANDA Experiment at the FAIR facility consists of 4600 straws which fill a cylindrical volume with a length of 1200 mm and inner and outer diameter of 150 mm and 410 mm, respectively. The tubes have a length of 1200 mm and diameter of 10 mm and are filled with an Ar/CO2 gas mixture. In the middle part of detector some straw layers skewed by about 3∘ relative to the standard axial orientation will be used. In effect the 3-dimensional particle tracking with a resolution of 150 µm (r−φ) and 2.9 mm in z-direction is expected. In addition, the energy loss measured via charges collected on the anode wires will be used for particle identification in the momentum range up to 1500 MeV/c. Various types of front end and data acquisition electronics are developed and tested. Performance tests for STT prototype are undertaken with proton beams at COSY Juelich. Experimental details, perspectives for the final equipment and results from measurements will be presented.